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-3+f/2=11
We move all terms to the left:
-3+f/2-(11)=0
We add all the numbers together, and all the variables
f/2-14=0
We multiply all the terms by the denominator
f-14*2=0
We add all the numbers together, and all the variables
f-28=0
We move all terms containing f to the left, all other terms to the right
f=28
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